Hydrodynamics demonstrate objects sinking in water with zero drag

Pointed objects falling through a tank

https://www.youtube.com/watch?v=JqV41MrySyg

https://phys.org/news/2017-09-hydrodynamics.html "When the ball hits the water it boils a small amount of water immediately around it, creating a layer of water vapour. At the right combination of ball and water temperatures this layer becomes stable, so the ball is completely encased in the gas. We call this a Leidenfrost state." Read more at: https://phys.org/news/2017-09-hydrodynamics.html#jCp  

Tuesday September 12th 2017